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Table 2 Content of crystalline silica in raw materials – the Iksan Precious Metal Complex Jewelry Processing Company (1999)

From: Systemic sclerosis due to crystalline silica exposure among jewelry workers in Korea: two case reports

Company Raw material Crystalline Silica Content (%)
Company A Cubic zirconia ND
Company B Jade ND
Company C
 First Partner Amethyst 15.23%
 Second Partner Cubic zirconia ND
 Third Partner Amethyst 42.43%
Company D Amethyst 8.25%
Company E Cubic zirconia ND
Company F Cubic zirconia, Ruby, Sapphire ND
Company G Cubic zirconia ND
Company H White crystal 56.66%
  1. ND not detected